We're seeing a few reports this weekend about blogs freezing when loading, with the mysterious address "http://0.0.0.0/" (and the precise text in this address varies from report to report), showing in the browser status bar.
Some bloggers have discovered that this is caused by the presence of the Widgeo counter being installed. Remove Widgeo, and the problem goes away. Find another visitor counter, that's more reliable.
If you're seeing this mysterious symptom in your blog, and Widgeo is not involved, diagnose your recent changes. Then, let us know what you diagnosed as the cause, in your case. Practice peer support.